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404 N.Wiget Lane <br /> Sequoia Walnut Creek,CA .9598 <br /> 98 <br /> (925)9S89Go4 <br /> FAX(925)988-9673 <br /> Analytical www.sequolalabs.com <br /> San Joaquin Company Inc. Project: 7500 W 11th St.Steet Tracy <br /> 1120 Hollywood Ave.No.3 Project Number: # 9902.012 Reported: <br /> Oakland CA.,94602 Project Manager: Dai Watkuts 24-May-00 14:51 <br /> ` Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT- Quality Control <br /> k ' Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %RRC RPD <br /> Analyte Result Limit Units Level Result AREC Limits RPD Limit Notes <br /> -,Batch OE01001 -EPA 5030B [P/TJ <br /> 'Blank(OEOI001-BLK1) Prepared&Analyzed: 01-May-00 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> ._penzene ND 0.50 " <br /> ;{}toluene ND 0,50 " <br /> Ethylbenzene ND 0.50 " <br /> _Xylenes(total) ND 0,50 " <br /> arrogate:a,a,a-Tn_luorotoluene 31.4 30.0 105 70-130 <br /> LCS(OEI11001-BSI) Prepared&Analyzed:O1-May-00 <br /> v-penzene 17.0 0,50 u8/l 20.0 85.0 70-130 <br /> �laluene 18.1 0.50 20.0 90.5 70.130 <br /> Ethylbenzene 18.0 0,50 20.0 90.0 70-130 <br /> Xylenes(total) 58,8 0.50 60.0 98.0 70.130 <br /> _:.;.,gate;a,a,a-Tr�uarafoluene 26.0 " 30.0 867 70-130 <br /> LCS Dup(OB01001-ESDI) Prepared&Analyzed:O1-May-00 <br /> benzene 17.8 0.50 ugll 20,0 89.0 70-130 4.60 20 <br /> i <br /> ?tToluene 18.9 0.50 20.0 94,5 70-130 4.32 20 <br /> Ethylheitzene 21.2 0.50 20,0 106 70-130 16,3 20 <br /> i.._�ylenes(total) 62.4 0.50 60.0 104 70-130 5.94 20 <br /> Gi.. <br /> ,c Surrogate:a,a,a-Triiluorotoluene 264 " 30.0 88,0 70-130 <br /> Matrix Spike(OE01001-MS1) Source: W004511-O1REIPrep ared&Analyzed:01-May-00 <br /> enzene 18.3 0.50 Ug/1 20.0 ND 91.5 70-130 <br /> I.:'Toluene 19,6 0.50 20.0 ND 98.0 70-130 <br /> Ethylbenzene 22.2 0.50 20.0 ND 111 70-130 <br /> F, Xylenes(total) 64.9 0.50 60.0 ND 108 70-130 <br /> (Surrogate:a,a,a-Try7uorololuene 268 30.0 89.3 70-130 <br /> I'- <br /> "S?riuoia Analytical-Walnut Creek The results in this report apply to the s'antples analyzed it accordance with the chain of <br /> custody document. This analytical report nrust be reproduced in its entirety. <br /> i <br /> Page 21 of 28 <br /> i -i <br />